Connection mechanism



May zo 192,41. 1,494,398

\ R. L. WILCOX coNNEcTIoN MEcHANisM 2 Sheets-Sheet. 1

Filed Feb. 6 Y |9212 MX@ Wwf May v:2.0 1924. 1,494,398

- R. L. w|L.cc x A CONNECTION MEcNAN'zsM Filed Feb, 6 1922 2 Sheets-Sheet 2 Aff" Patented May 20, 1924.

RICHARD LESTER VILCOX, OF WATERBURY, CONNECTICUT, ASSIGNORy TO THE WATER,- BURY FARREL FOUNDRY AND MACHINE C'OMANY, OF WATERBURY, CONNECTI;

CUT, A. CRPORATION F CONNECTICUT.

CONNECTION MECHANISM.

Application led February 6, 1922. Serial No. 534,536.

To @ZZ whom t may concern Be it known that I, BICI-mno LESTER Trncox, a citizen of the United States, residing at IVaterbury, in the county of New Haven and State oit Connecticut, have invented certain new and useful Improvements in Connection ll/Iechanisms, ot which the 'following' is a specification, reference being had therein to the accompanying drawings.

This invention relates to connection mechanisms and refers more particularly to means for connecting a power member with an operated member that will so yield when subjected to excessive strains that thereafter one of the members will remain stationary.

Among the aims and objects of this invention, among other things, may be recited the provision oit a device of the character mentioned with a view to compactness in which 20 the number of parts are few, the construction simple, cost ot production small and eliiciency of operation high.

These and other objects I obtain by means ot such construction and relative arrange- 25 ment of parts as will be apparent 'from an inspection of the accompanyingr drawings in connection with the description hereinafter contained and wherein a preferred em bodiment of the invention is disclosed for the purpose of imparting an understanding of the same.

In rthe drawings wherein like characters of' reference indicate corresponding parts in the several igures;

Figure 1 is a side elevation of my improved connection mechanism as applied to a heading or upsetting machine, the parts being in the relative position occupied by them while operating under the normal conditions;

Figure 2 is a similar view showing the relative position of the parts after the fragile element has been broken, as a result of an abnormal operating strain;

Figure 3 is a sectional view ot the parts, taken generally upon'line ot' Figure 1:

Figure 4 is a perspective view ot the arm member; and l Figure 5 is a similar view ot the shearing member.

My improved device is adapted for use with many forms of mechanisms. but 'for the purpose of illustration I have shown the same as associated with the mechanism for operating the plunger of a heading or upis held in contact with a cam from which motion is imparted to the rock lever.

The partsk above described are common and well known in the art and require no further description herein.

My improved device consists in the means for connecting the rock lever 12 with the plunger 11 whereby a reciprocatory movement is transmitted to the latter from the former.

One preferred form of said mechanism consists of an arm member 16 connected with the rock lever 12 by the stud 17 and having a head 18 through which is a recess 19 at substantially a right angle to the aXis of the stud 17 and a shearing member 20 which is pivotally connected with the plunger 11 by the stud 21 and having a recess 22 therein which lies substantially parallel with the axis of the stud 21.

The arm member 16 and shearing member 20 are pivotally secured together by the stud 23 having a head 24 at one end and a` nut 25 on the opposite end. Other means :for connecting these members may be utilized, however, and my invention is not therefore limited to the enact means herein shown.

The shearing bar 26 is preferably rectan gular in cross-section with a plurality of notches 27 in opposite Jfaces thereof substantially opposite each other. By reason of these notched faces, the shearing bar is formed into a plurality of sections 28. This bar is inserted within the recess 19 with the innermost section 28 projecting beyond the lower face 29 of the head 18, as shown in Figure 1, with. the bottoms of two of the notches 27 in substantial alignment with said tace. It is thus held rigidly by a clamp 30 which is adjustably secured by the screws 81 and 32 in a well known manner, these latter being threaded through the head portion 18 and 'the former having nuts thereon'to hold the same against endwise movement.

In Figures 1 and 3 my mechanism 1s shown with the parts assembled and providing a positive connection between the rock lever l2 and the plunger 11, at which time the wall 34 of the recess 22 is in contact with one side of the projecting section 28, see Figure l, and the face 35 thereon is in contact with the face 86 of the arm member, thus making a rigid connection with the parts locked against relative movement.

lith all of the mechanism operating under normal strain, the strength of the shearing bar 26 is suflicient to transmit the motion of the rock lever l2 to the plunger ll. It' movement ot the plunger is interfered with, however, by excessive strain, the continued movement ot the rock lever l2 actuates the arm member 16 and shearing member 20 relatively to each other in very much the-same manner as a toggle, about the airis of the stud 23 until they occupy the positions substantially as shown in Figure 2.

During this action the shearing member 20 breaks oft' the projecting section 28 et the shearing bar 2G against the clamp 30. The rock lever will thereafter continue its movement Without transmitting motion to the plunger 1l, the arm member 1G and shearing member 2O moving relatively upon the stud 23.

lThe mechanism is restored for transmitting motion by advancing the shearing bar 26 so that the next succeeding section 28 will project beyond the tace 29 of the arm member 16 as before, manipulation of the clamp 30 permitting this to be done.

The sections 28 are each successively broken from the shearing bar 26 at the weakest point, that is, between the notches 27 so that only a small portion of the bar is lost at each shearing action.

In order to prevent the section 28, broken o'tl 'from the shearing bar 2G, fromA llying wild and thus possibly cause injuryy I have provided means for controlling its movement. This comprises a member 37 preterably integral with the shearingmember 20, having an opening 38 therethrough in part forming an extension of the recess 2i., having a downwardly flaring Adoor 39 and an enclosing hood 40 at the top thereof.

yThe shearing bar 26 occupies a generallyv vertical position with the lower section 28 projecting into the recess 22 and as it is broken od in the manner above described, it falls by gravity onto the inclined tloor 39 being held against lateral movement by the walls of the member 37 and from flying.: upwardly by the hood 40. Thus the section as broken ott is prevented from moving er;- cept in a defined path and drops trom the inclined Afloor 39 into a receptacle conveniently arranged to rece-ive it, if so desired.

An inclined face lll upon the head 1S ot the arm member 16 provides an additional safeguard against the broken oitlE section flying inwardly and insures its controlled movement during that portion of the rotary movement ot the shearing bar 2O immediately after the section has been broken otl.

As the bottom portions ot the notches 2T are inside of the tace 29, the lowermost section 2S is so broken otf that any projecting or ragged edge is inside of said tace 29. '.lheret'ore no projecting or ragged edoe can interfere with the operation ot' the shearing member.

Obviously minor changes and alterations may be made within my invention aside it'rom those herein suggested, and I desire it to be understood that l do not limit myself to the exact construction herein shown and described, but claim all that falls lairly within the spirit and scope ot the` appended claims.

llhat I claim as new and desire to secure b v Letters Patent, is:

l. Yin connection mechanism, companion members operatively connected with each other, and a shearing element secured in one. member, a part thereof extending beyond said member and into the path of movement oit the other member, so that when the said members are moved in relation to each other that part ot the shearing element eX- tending beyond the member to which it is secured is broken off.

2. ln la connection mechanism, companion members operatively connected with each other, and a shearing element secured in one member and projecting into the path of the other member so that when the saine are moved in relation to each other, a portion o' said shearing element is broken 0H, and means t'or guiding the movement of the said broken oilp portion.

fin a connection mechanism, an arm member, a shearing element formed into sections separated by weakened portions means for securing said sl'iearing element in said arm member so that one of the sections will project beyond a tace thereon, with a weakened portion thereof registering therewith; means for operatively connecting said members together whereby a portion ot said shearing element is held in contact with the projecting section ot said shearing element` and means 'for controlling the move-ment of that portion ot the shearing element separated therefrom.

-l-. In a connection mechanism, companion members, one an arm member and the other a shearing member, operatively connected with each other; a shearing' element having a section at one end separated from the other part thereof by a weakened portion; movable means for securing said shearing element in said arm member with. said section projecting into the path of relative movement et the shearing member with said weakened portion adjacent to one end of said securing inea-,see

means, the said companion members being held againstrelative movement by the shearing member contacting with said section and with a shoulder upon said arm member; and means for controlling the movement ot the broken oli1 portion of the shearing element,r

that is separated `from said element during the relative movement of said members.

5. In a connection mechanism, companion members operatively connected with each other, and a shearing element secured in one member and projecting into the path of the other member so that when the same are moved in relation to each other, a, portion of said shearing element is broken oil", and means connected With one or said members for guiding the movement ot the broken 'oilz portion ot said shearing element.

6. In a connection mechanism, companion members operatively connected with each other, a .shearing element secured in one member and projecting into the path ot the other member so that When the same are moved in relation to each other a, portion ot said shearing element is broken oit, and means having an opening therethrough conneeted with one ot said members for guid ing the movement ot the brolren off portion of said shearing element.

7. In a connection mechanism, companion members operatively connected with each other, a shearing element secured in one member and proj ect-ing into the path of the other member so that When the same are moved in relation to each other a portion of said shearing element is broken otl, and laterally projecting means upon one side of one of said members for guiding the movement of the broken oit portion of said shearing element, comprising a structure closed on opposite sides With an outwardly inclined bottom tace.

8. In a connection mechanism, companion members operatively connected with each other, a shearing element secured in one member and projecting into the path ot the other member so that when the same are moved in relation to each other a portion of said shearing element -is broken olii, laterally projecting means upon one side oil one of said members 'for guiding the movement ot the broken off portion of said shearing element, comprising a structure closed on opposite sides With an outwardly inclined bottom tace. and a covering hood opposite said inclined tace.

9. ln mechanism of the. character de scribed, an arm member having recess therein, a shearing element formed into sections separated by weakened portions there` of; means tor securing said shearing element in said recess so that one of said sections Will project beyond the end thereof, a shearing member having a pivotal connection with said arm member, and a recess therein which is substantially an extension of the recess in said arm member and into which projects that section of the shearing element projecting beyond the recess in said arm member, said shearing member being formed with a laterally projecting portion with an opening therethrough forming an` extension of the recess in said shearing member.

l0. ln mechanism or" the character described, an arm member having a recess therein, a shearing element formed into sections separated by weakened portions thereot; means for securingr said shearing element in said recess so that one of said sections Will project beyond the end thereof, a shearing` member having a pivotal connect-ion with said arm member, and a recess therein which is substantially an extension of thek recess in said arm member and into which projects that section of the shearing element projecting beyond the recess in said arm member, said shearing member being formed with a laterally projecting portion With an opening having one inclined tace.

fil. In mechanism of the character described, an arm member having a recess therein, a shearing element 'formed into sections separated by weakened portions there'- ot; means for securing said shearing ele-" nient in said recess so that one ot said sections Will project beyond the end thereof, a shearing member having a pivotal connection With said arm member, and a recess therein which is substantially an extensionr of the recess in said arm member and into which projects that section o' vthe shearing element projecting beyond the recess in said arm member, said shearing member being formed with a laterally projecting portion with an opening having one inclined face, and a covering hood at the end of said opening opposite said inclined tace.

l2. ln mechanism of the. character de'- scribed, an' arm member having a "head thereon with a recess therein and an angular tace; a shearing element formed into sections separated by .weakened portions thereof g means for securing the shearing element in said recess with one end thereof projecting; a shearing member having a pivotal connection with said arm member and a recess therein which is substantially an extension oit the recess in the head of said arm member and into Which projects the projecting portion of the shearing element beyond the recess in said arm member, said shearing member being formed with a laterally projecting portion. having an opening therethrough forming an extension of the recess in the shearing member, Which latter during the relative movement of said members is closed upon its outer end by the angular tace upon the head ot said arm member.

13. In a connection mechanism, companion members o-peratively connected with eac-h other and a shearing element composed of a plurality of sections with a weakened portion therebetween, means for securing said shea-ring element in one of said members whereby a portion thereof projects into the path of relative movement of the other member, all of the parts being so designed and arranged that said shearing element is rigidly secured and a weakened portion thereof is in register with a face of the member with which it is connected and the other member has contact therewith at a point distant therefrom.

14. In a connection mechanism, companion members, onean arm member having a shoulder thereon, and the other a shearing member, operatively connected with each other, a shearing element having a section at one end separated from the remainder of said shearing element by a weakened portion; means for securing said shearing element in said arm member whereby said section projects into lthe path of relative move.- ment of the shearing member with said weakened portion adjacent to one end of the securing means, said shearing member having contact with said section at a point beyond the said face of said arm member and when so engaged, the said members being held against relative y, movement by said shearing member having contact with said section and with the shoulder of said arm member.

l5. In a connection mechanism, companion members comprising an arm member and a shearing member, operatively connected with each other, a shearing element having section at one end separated from the remainder of said shearing element by a weakened portion; and means for securing said shearing element in said arm member all of said parts being so associated that said shearing member is held against relative movement by said shearing element and a projecting portion of said arm member whereby said members and element operate as a unit under normal strains, but move relatively to each other under abnormal stra-ins, at which time the projecting section of said shearing element will be broken oit at said weakened portion and released from engagement with both of said members, the pressure of the shearing member thereon being applied at a point beyond its securing means.

16. In connection mechanism, companion members operatively connected with each other, a shearing element having contact with both of said members but secured in only one thereof, that portion ot' said shearing element in contact with the member to which it is not secured being broken ofi' when said members move relatively to each other, the broken-oft portion then being` free from contact with either of said members.

17. In mechanism of the character dcscribed, an arm member having a head thereon with a recess therein and an angular tace; a shearing element formed into sections; means for securing the shearing element in said rec-ess with one end thereof projecting; a shearing member having a pivotal connection with said arm member and a recess therein which is substantially an extension of the recess in the head of said arm mem-ber and into which projects the projecting portion or" the shearing element beyond the recess in said arm member, said shearing member being formed with a laterally projecting portion having an opening therethrough. forming an extension of the recess in the shearing member, which latter during the relative ino-vement of said members is closed upon its enter end by the angular face upon the head of said arm member.

In testimony whereof, I have hereunto afiixed my signature.

RICHARD LESTER WILCOX. 

